Wood Identification Guide

by Eric Meier

When attempting to identify a wood sample, it’s important to keep in mind the limitations and obstacles that are present in our task. Before starting, please have a look at The Truth Behind Wood Identification to approach the task in a proper mindset; I consider the linked article to be required reading for all those visiting my site with the intent of identifying wood.

1. Confirm it is actually solid wood.

Before proceeding too much farther into the remaining steps, it’s first necessary to confirm that the material in question is actually a solid piece of wood, and not a man-made composite or piece of plastic made to imitate wood.

A solid piece of Cocobolo: note how the grain naturally wraps around the sides and endgrain of the wood.

Can you see the end-grain? 

Manufactured wood such as MDF, OSB, and particleboard all have a distinct look that is—in nearly all cases—easily distinguishable from the endgrain of real wood. Look for growth rings—formed by the yearly growth of a tree—which will be a dead-giveaway that the wood sample in question is a solid, genuine chunk of wood taken from a tree.

Viewing the end of this “board” reveals its true identity: particleboard.

Is it veneered? 

If you see a large panel that has a repeating grain pattern, it may be a veneer. In such cases, a very thin layer of real wood is peeled from a tree and attached to a substrate; sometimes the veneer can be one continuous repeating piece because it is rotary-sliced to shave off the veneer layer as the tree trunk is spun by machines. Assuming it is a real wood veneer with a distinct grain and texture—and not merely a piece of printed plastic—you may still be able to identify the outer veneer wood in question, but you should still realize that is it only a veneer and not a solid piece of wood.

Large repeating patterns suggest a veneer.

Is it painted or printed to look like wood? 

Many times, especially on medium to large-sized flat panels for furniture, a piece of particleboard or MDF is either laminated with a piece of wood-colored plastic, or simply painted to look like wood grain. Many of today’s interior hardwood flooring planks are good examples of these pseudo-wood products: they are essentially a man-made material made of sawdust, glues, resins, and durable plastics.

2. Look at the color.

Some questions to immediately ask yourself:

Is the color of the wood natural, or is it stained?

If there is even a chance that the color isn’t natural, the odds are increased that the entire effort of identifying the wood will be in vain.

The reddish brown stain used on this piece of Jatoba (Hymenaea courbaril) has been planed away on top, exposing the paler color of the raw wood underneath.

Is it weathered or have a patina?

Many woods, when left outside in the elements, tend to turn a bland gray color. Also, even interior wood also takes on a patina as it ages: some woods get darker, or redder, and some even get lighter or lose their color; but for the most part, wood tends to darken with age.

Fresh sanding near the end of this Osage Orange (Maclura pomifera) board has exposed the characteristic yellow coloration of the wood, which has a strong tendency to shift down to a golden brown over time.

Is it possible to sand or plane the board to see the natural raw color of the wood?

The most predictable baseline to use when identifying wood is in a freshly sanded state. This eliminates the chances of a stain or natural aging skewing the color diagnosis of the wood.

3. Observe the wood grain.

If the wood is unfinished, then look at the texture of the grain. Ask yourself these questions:

Does the wood have an open, porous texture?

Most softwoods will be almost perfectly smooth with no grain indentations, while many common hardwoods have an open pore structure, such as oak or mahogany; though there are some hardwoods that are also smooth to the touch, such as maple.

Can you tell if the wood is quartersawn or plainsawn?

By observing the grain patterns, many times you can tell how the board was cut from the tree. Some wood species have dramatically different grain patterns from plainsawn to quartersawn surfaces. For instance, on their quartersawn surfaces, lacewood has large lace patterns, oak has flecks, and maple has the characteristic “butcher block” appearance.

Is there any figure or unusual characteristics, such as sapwood, curly or wild grain, burl/knots, etc.?

Some species of wood have figure that is much more common than in other species: for example, curly figure is fairly common in soft maple, and the curls are usually well-pronounced and close together. Yet when birch or cherry has a curly grain, it is more often much less pronounced, and the curls are spaced farther apart.

Curly Maple (sealed)
The strong, tight curl seen in this wood sample is very characteristic of Maple (Acer spp.).

4. Consider the weight and hardness of the wood.

If it’s possible, pick the piece of wood up and get a sense of its weight, and compare it to other known wood species. Try gouging the edge with your fingernail to get a sense of its hardness. If you have a scale, you can take measurements of the length, width, and thickness of the wood, and combine them to find the density of the wood. This can be helpful to compare to other density readings found in the database. When examining the wood in question, compare it to other known wood species, and ask yourself these questions:

Is the wood dry?

Wood from freshly felled trees, or wood that has been stored in an extremely humid environment will have very high moisture contents. In some freshly sawn pieces, moisture could account for over half of the wood’s total weight! Likewise, wood that has been stored in extremely dry conditions of less than 25% relative humidity will most likely feel lighter than average.

How does the wood’s weight compare to other species?

Taking into account the size of the board, how does its weight compare to other benchmark woods? Is it heavier than oak? Is it lighter than pine? Look at the weight numbers for a few wood species that are close to yours, and get a ballpark estimate of its weight.

A piece of Lignum Vitae is weighed on a small digital scale.

How hard is the wood? 

Obviously softwoods will tend to be softer than hardwoods, but try to get a sense of how it compares to other known woods. Density and hardness are closely related, so if the wood is heavy, it will most likely be hard too. If the wood is a part of a finished item that you can’t adequately weigh, you might be able to test the hardness by gouging it in an inconspicuous area. Also, if it is used in a piece of furniture, such as a tabletop, a general idea of its hardness can be assessed by the number and depth of the gouges/dings in the piece given its age and use. A tabletop made of pine will have much deeper dents than a tabletop made of Oak. Additionally, you can always try the “fingernail test” as a rough hardness indicator:  find a crisp edge of the wood, and with your fingernail try to push in as hard as you can and see if you’re able to make a dent in the wood.

5. Consider its history.

Many times we forget common sense and logic when attempting to identify wood. If you’ve got a piece of Amish furniture from Pennsylvania, chances are more likely that the wood  will be made of something like black walnut or cherry, and not African wenge or jatoba. You might call it “wood profiling,” but sometimes it can pay to be a little prejudiced when it comes to wood identification. Some common-sense questions to ask yourself when trying to identify a piece of wood:

Where did it come from?

Knowing as much as you can about the source of the wood—even the smallest details—can be helpful. If the wood came from a wood pile or a lumber mill where all the pieces were from trees processed locally, then the potential species are immediately limited. If the wood came from a builder of antique furniture, or a boat-builder, or a trim carpenter: each of these occupations will tend to use certain species of woods much more often than others, making a logical guess much simpler.

Despite its discoloration and wear, it’s very likely that this rolling pin is made of hard maple.

How old is it?

As with the wood’s source, its age will also help in identification purposes. Not only will it help to determine if the wood should have developed a natural patina, but it will also suggest certain species which were more prevalent at different times in history. For instance, many acoustic guitars made before the 1990s have featured Brazilian rosewood backs/sides, yet due to CITES restrictions placed upon that species, East Indian rosewood became a much more common species on newer guitars. (And this is a continuing shift as newer replacements are sought for rosewoods altogether.)

How large is the piece of wood?

Some species of trees are typically very small—some are even considered shrubs—while others get quite large. For instance, if you see a large panel or section of wood that’s entirely black, chances are it’s either painted, dyed, or stained: Gaboon ebony and related species are typically very small and very expensive.

What is the wood’s intended use?

Simply knowing what the wood was intended for—when considered in conjunction with where it came from and how old it is—can give you many clues to help identify it. In some applications, certain wood species are used much more frequently than others, so that you can make an educated guess as to the species of the wood based upon the application where it was used. For instance, in the United States: many older houses with solid hardwood floors have commonly used either red oak or hard maple; many antique furniture pieces have featured quartersawn white oak; many violins have spruce tops; many closet items used aromatic red cedar, and so forth. While it’s not a 100% guarantee, “profiling” the wood in question will help reduce the number of possible suspects, and aid in deducing the correct species.

6. Find the X-Factor.

Sometimes, after all the normal characteristics of a sample have been considered, the identity of the wood in question is still not apparent. In these instances—particularly in situations where a sample has been narrowed down to only a few possible remaining choices—it’s sometimes helpful to bring in specialized tests and other narrower means of identification.

The following techniques and recommendations don’t necessarily have a wide application in initially sorting out wood species and eliminating large swaths of wood species, but will most likely be of use only as a final step in special identification circumstances.

Odor

Believe it or not, freshly machined wood can have a very identifiable scent. When your eyes and hands can’t quite get a definitive answer, sometimes your nose can. Assuming there is no stain, finish, or preservative on or in the wood, quickly sand, saw, or otherwise machine a section of the wood in question, and take a whiff of the aroma.

Although new scents can be very difficult to express in words, many times the scent of an unknown wood may be similar to other known scents. For instance, rosewoods (Dalbergia spp.) are so named for their characteristic odor that is reminiscent of roses. Although difficult to directly communicate, with enough firsthand experience scents can become a memorable and powerful means of wood identification.

Fluorescence

While certain woods can appear basically identical to one another under normal lighting conditions, when exposed to certain wavelengths—such as those found in blacklights—the wood will absorb and emit light in a different (visible) wavelength. This phenomenon is known as fluorescence, and certain woods can be distinguished by the presence or absence of their fluorescent qualities. See the article Fluorescence: A Secret Weapon in Wood Identification for more information.

Black Locust: fluorescence (under blacklight)
Black Locust (Robinia pseudoacacia) glows a bright yellow-green when placed under a blacklight.

Chemical Testing

There are only a small number of chemical tests regularly used on wood, most of which are very specialized and were developed to help distinguish easily confused species with one another. They work by detecting differences in the composition of heartwood extractives. A chemical substance (called a reagent) is usually dissolved in water and applied to the wood surface: the surface is then observed for any type of chemical reaction (and accompanying color change) that may occur. Two of the most useful are the tests that are meant to separate Red and White Oak, and Red and Hard Maple.

Heartwood Extractives Leachability

Sometimes a wood species will have heartwood extractives that will be readily leachable in water and capable of conspicuously tinting a solution of water a specific color. For instance, the heartwood extractives contained in osage orange (Maclura pomifera) contain a yellowish-brown dye that is soluble in water. (This can sometimes be observed anecdotally when the wood is glued with a water-based adhesive: the glue’s squeeze-out is an unusually vibrant yellow.)

In a simple water extract color test, wood shavings are mixed with water in a vial, test tube, or other suitably small container, and the color of the water is observed after a few minutes. If the heartwood extractives are leachable by water, then a corresponding color change should quickly occur.

In addition to osage orange (Maclura pomifera)merbau (Intsia spp.), and rengas (Gluta spp. and Melanorrhoea spp.) are also noted for their readily leachable heartwood extractives. Because this property is quite uncommon, it can serve to quickly differentiate these woods from other lookalikes.

7. Look at the endgrain.

Perhaps no other technique for accurate identification of wood is as helpful and conclusive as the magnified examination of the endgrain. Frequently, it brings the identification process from a mostly intuitive, unscientific process into a predictable, repeatable, and reliable procedure.

Looking at the endgrain with a magnifier shouldn’t be a mystifying or esoteric art. In many cases, it’s nearly as simple as examining small newsprint under a magnifying glass. There are three components necessary to reap the full benefits contained in the endgrain:

I. A prepared surface.

When working with wood in most capacities, it becomes quickly apparent that endgrain surfaces are not nearly as cooperative or as easily worked as face grain surfaces. However, in this case, it is absolutely critical that a clear and refined endgrain surface is obtained.

For a quick glance of a softwood sample, a very sharp knife or razor blade can be used to take a fresh slice from the endgrain. However, in many denser species, especially in tropical hardwoods, one of the best ways to obtain a clear endgrain view is through diligent sanding. It’s usually best to begin with a relatively smooth saw cut (as from a fine-toothed miter saw blade) and proceed through the grits, starting at around 100, and working up to at least 220 or 320 grit, preferably higher for the cleanest view.

II. The right magnifier.

It need not be expensive, but whatever tool is used to view the endgrain should have adequate magnifying power. In most instances, 10x magnification is ideal, however, anything within the range of 8 to 15x magnification should be suitable for endgrain viewing. (Standard magnifying glasses are typically in the range of 2 to 4x magnification.)

These stronger magnifiers, sometimes called loupes, usually have a smaller viewing area than standard magnifying glasses. Fancier models—with built in lights, or larger viewing surfaces—are available at a premium; but the most basic models are usually only a few dollars.

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III. A trained eye.

The third element that constitutes a proper endgrain examination is simply knowing what to look for. In analyzing the patterns, colors, shapes, and spacing of the various anatomical features, there is a veritable storehouse of information within the endgrain—all waiting to be unlocked. Yet, if these elements have not been pointed out and learned, the array of features will simply seem like an unintelligible jumble. The discipline of recognizing anatomical endgrain features is not easily summed up in a few sentences or even a few paragraphs, but it is nonetheless critical to the identification process. To this end, an in-depth look should be given to the various categories, divisions, and elements that constitute endgrain wood identification on the macroscopic level. (In this regard, macroscopic denotes what can be seen with a low-powered, 10x hand lens—without the aid of a microscope—rather than simply what can be seen with the naked eye.) Because the anatomy between softwoods and hardwoods is so divergent, each will be considered and examined separately:

Still stumped?

If you have a mysterious piece of wood that you’d like identified, you’ve got a few options for next steps:

USDA’s Forest Products Laboratory

You can mail your physical wood samples to the Center for Wood Anatomy Research

Pros:

  • Free
  • Professional wood identification

Cons:

  • Only available to US citizens
  • Slow turnaround times (up to a month or more)
  • Limited to three IDs per year

See their Wood ID Factsheet for more info.

Alden Identification Service

You can mail your physical wood samples (even small sections taken from antiques) to Alden Identification Service.

Pros:

  • Professional wood identification
  • Faster turnaround times (ranging from a few days to a week or two)

Cons:

  • Paid service

See their ordering page for more info. (Note that Harry Alden has written several books while at USDA, including both Hardwoods and Softwoods of North America.)

Ask for help online

If the wood ID is merely a curiosity, or non-critical, you can post pictures of the wood in question.

Pros:

  • Free
  • No need to send physical samples

Cons:

  • Greatly limited by the quality of the pictures provided
  • Extra work usually required to get adequate clarity in photos

See article of Common US Hardwoods to help find the most commonly used woods.

Get the hard copy

wood-book-standupIf you’re interested in getting all that makes The Wood Database unique distilled into a single, real-world resource, there’s the book that’s based on the website—the Amazon.com best-seller, WOOD! Identifying and Using Hundreds of Woods Worldwide. It contains many of the most popular articles found on this website, as well as hundreds of wood profiles—laid out with the same clarity and convenience of the website—packaged in a shop-friendly hardcover book.
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charlotte

it is heavy has reddish color 2.6 ponds 41/2in wife and 3/4 inch thick 36 inch long .put this together . we found in a old shed that was given to us makes beautiful boxes . first pic dry 2 pic wet please help . it has curls and figured

Wood weight
Fairly heavy (like oak)
Distinct wood odor?
Yes
Geographic region
chocolate nutty
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Erich

Hi, I’m trying to identify this wood. It was part of a “mixed box” of wood I bought long ago, which included everything from maple and spruce to mahogany and rosewood. When I unpacked it I thought it might be Bahai tulipwood. But now, fifteen years later, I think I might have been wrong. When jointing and sanding the pieces, I didn’t get the expected dalbergia smell.
For the second picture I wiped one side with mineral spirits.

Thanks in advance for your help.
Erich

Wood weight
I don't know
Distinct wood odor?
I don't know
Geographic region
Hamburg
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Wood Sample 2.jpg
Wood Sample 3.jpg
Steve Eldridge

Found an old 18th century Taiko drum made from a single log. About 19” diameter. Interior was cut with some sort of gauge tool. Surface quite rough. But the grain is tight and beautiful.

Wood weight
Fairly heavy (like oak)
Distinct wood odor?
No
Geographic region
Oregon, USA
Steve Eldridge

Grain of wood. I don’t think the Japanese craftsmen were using African would yet in 1780 which is purportedly the age of this drum.

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Paige

Hi there, trying to sell some furniture but unsure of the wood type. Any help would be appreciated! Bought it about 5 years ago in South Africa.

Wood weight
Fairly heavy (like oak)
Distinct wood odor?
Yes
Geographic region
United Kingdom
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David

Good morning. This is an antique backgammon game that I’m restoring …. any idea what wood this would be ? Thanks so much.
David (from France)

Wood weight
Fairly heavy (like oak)
Distinct wood odor?
No
Geographic region
France
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22A63992-D525-4630-9ACE-00818CAB4108.jpeg
Joseph McAnally

What species of wood is this? I’m in the Dallas area and it’s from recycled pallet wood. I thought it might be cedar but now I’m not sure.

Wood weight
Fairly heavy (like oak)
Distinct wood odor?
Yes
Geographic region
TX
Wood 1.jpg
Wood 2.jpg
Wood 3.jpg
Arlece Larae

I purchased this solid wood bed frame on offerup. I’d love to know the type of wood so I can buy matching furniture. The bed is stamped “made in Canada”. Please help me ID, thanks!

Wood weight
Fairly heavy (like oak)
Distinct wood odor?
Yes
Geographic region
Canada
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Joe D

We got this hewn beam sample online that we are trying to re-create. Weight was hard to say because it is so small. Would appreciate your expertise on the subject. We were thinking maybe Sassafras but not quite sure. Thanks for your time!

Wood weight
Fairly light (like pine)
Distinct wood odor?
I don't know
Geographic region
Bay Area
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Jessica

I turned this bowl on a lathe with a piece of scrap mystery wood. It has walnut oil on it to finish it. The walnut oil I use doesn’t seem to change the color. There was no odor I could detect while turning it. This bowl is really light but I’m not sure what balsa feels like

Wood weight
Fairly light (like pine)
Distinct wood odor?
No
Geographic region
NE USA
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Jessica

My husband is currently building a table out of Black Walnut. This bowl definitely doesn’t have the smell that the walnut does. Plus the walnut bothers my allergies where this didn’t.

Tabatha Maue

I purchased this through an online seller and would like to buy other furniture that matches. I cannot figure out what type of wood it is and would love any help I could get. It may smell slightly like licorice.

Wood weight
Extremely heavy (sinks in water)
Distinct wood odor?
I don't know
Geographic region
Syracuse, NY United States
EAE44C4D-90A5-4922-9E1B-44CE791453E2.jpeg
Tabatha Maue

Thank you very much.

Ryan Camorata

The wood is a tabletop and I don’t know where it came from. It is heavy. I can’t compare it to oak, Im not that knowledgable (I’m 6′ 200lbs and 38 years old for reference of who is considering it heavy). It’s a hard wood – I’ve gone through several sheets of 40 grit sandpaper on an orbital sander to try and level it out. About 8 solid hours of sanding and I’m still not there, so it’s dense (and so am I for not breaking down and just buying a belt sander). It doesn’t smell like anything that I… Read more »

Wood weight
Fairly heavy (like oak)
Distinct wood odor?
No
Geographic region
CO
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John Fort

Hi, I’m trying to help my friend figure out what this hard wood from Oslo is. I only have pictures of the wood so I couldn’t feel the weight and the scent of the wood. Any help would be appreciated! Cheers!

Wood weight
I don't know
Distinct wood odor?
I don't know
Geographic region
Oslo, Norway
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Unknown_Wood_01.png
Sara Lemay

Cabinets made in Quebec Canada. Does anyone know what type of wood?

Wood weight
I don't know
Distinct wood odor?
I don't know
Geographic region
Vermont
image.jpg
image.jpg
Micah

Sorry, I know nothing about wood, but would
like to match my floors. What kind of wood floors are these? Oak?

Wood weight
I don't know
Distinct wood odor?
I don't know
Geographic region
Wisconsin
image.jpg
Jessica Williams

Original hardwood in 1965 house in Charleston sc. trying to figure out type of wood flooring. I am going to sand and refinish but I have a space that didn’t have hardwood under the carpets..Can you help?? Thank you!

Wood weight
I don't know
Distinct wood odor?
I don't know
Geographic region
Charleston sc
image.jpg
Iain McDonald

I would be very grateful if you could identify the wood that this piano is made of. The Model is a Knight K15, manufactured in 1967.

Wood weight
I don't know
Distinct wood odor?
I don't know
Geographic region
Kinross-shire
Lid and music rack.jpg
Knight piano & stool - front view.jpg
Iain McDonald

Many thanks – much appreciated.

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